82 results about "Juvenile" patented technology

The invention discloses a cuttlefish reef integrating egg laying and juvenile rearing. The floating fish reef is positioned above the bottom attachment reef; the floating body is arranged on the upper frame; the shading clay plate is arranged in the middle of the upper frame; the upper netting is arranged at the side part of the upper frame; the clay pipe is arranged on the upper netting; the attachment rope is transversely connected with the inner side part of the upper frame; the clay box is hung on the attachment rope; the pile rope is connected with the upper frame and the pile; the lower netting is arranged outside the lower frame, and an entrance is formed in the lower netting; the upper end of the support is connected with the lower frame, and the lower end of the support is connected with the foot margin. Abundant attaching organisms such as algae are attached to the surface of the floating fish reef, and larva cuttlefishes and other animals are attracted to gather. The bottom fish reef serves as a cuttlefish spawning base, meanwhile, the flow field environment is changed, seabed nutritive salt is driven to be conveyed to the upper middle layer, the primary productivity of a sea area is improved, and an inhabiting and foraging place is provided for young cuttlefishes. The cooperative linkage effect of the floating fish reef and the bottom attachment reef is good, and the comprehensive utilization efficiency of ocean resources is improved.

The utility model relates to the field of breeding equipment, and discloses an octopus larva breeding device which comprises a shell, partition plates are arranged in the shell, limiting assemblies are arranged on the outer walls of the partition plates, adjusting assemblies are arranged between the partition plates, an open groove is formed in the shell, and PVC pipes are arranged at the tops of the partition plates and used for providing a shielding place for octopus larvae. The number, the diameter and the throwing distance of the PVC pipes can be adjusted according to breeding requirements; the adjusting assembly comprises a connecting rod, and one end of the connecting rod is rotationally connected to the bottom of the partition plate. The sleeve moves on the outer wall of the two-way threaded rod and drives the connecting rods on the two sides to move reversely or oppositely, so that the partition plates get close to each other or get away from each other, the effect of adjusting the distance between the partition plates is achieved, the living space of the octopus larva in the vertical direction can be adjusted, and cultivation is completed in cooperation with adjustment of the PVC pipe; meanwhile, the PVC pipes on each layer can be conveniently replaced by increasing the distance between the partition plates, and the convenience of the octopus larva breeding device is improved.

According to the sectional type efficient jewel perch circulating water fry culture method, the feeding frequency is adjusted according to the growth stage of fry, so that the fry can grow healthily and rapidly; when the foodstuff is converted, transition is performed by feeding different foodstuffs, so that the fries adapt to ingestion of the foodstuffs, and the transition period of the foodstuff conversion of the fries is shortened.

The utility model discloses a three-dimensional incubator for ampullaria gigas eggs, and relates to the technical field of ampullaria gigas incubation. Comprising fixing rods fixed to the four corners of the top face of the surrounding plate, positioning rods are symmetrically fixed to the four corners of the top of the surrounding plate, and the cover net is hooked to the fixing rods and the positioning rods. The box bottom plate and the surrounding plates form an incubation box body, and fixing grooves are formed in the four corners of the bottom face of the box bottom plate. According to the pomacea canaliculata incubation box, through the arrangement of the incubation box body, pomacea canaliculata eggs are placed on the cover net in a loose state, the meshes of the cover net support the pomacea canaliculata eggs, young pomacea canaliculata falls into the cultivation cavity conveniently, the overall structure is simpler, a plurality of box bodies can be stacked conveniently, the occupied space is reduced, meanwhile, the yield of the young pomacea canaliculata is increased, and the pomacea canaliculata incubation box is suitable for popularization and application. The hatching cost is reduced, and the feed is more suitable for serving as leech bait.

This invention relates to method, in vivo and in vitro for mass production of entomopathogenic nematodes as a biological control agent for laboratory use and small scale field application against agricultural pest. In vivo production has managed to sustain as a cottage industry. In vivo production is likely to continue as small business venture for niche markets. For in vivo production eight Pakistani strains of entomopathogenic nematodes were mass cultured using G. mellaonella larvae at different concentrations and in vitro production were carried out in soya and wheat flour medium. Average in vivo production potential at were 14 x 106 infective juveniles and in vitro production potential ranged up to 50* 10 6 inefective juveniles.

The invention discloses a breeding method of anti-hypoxia grouper, and belongs to the technical field of grouper breeding. The method comprises the steps of parent fish selection, hypoxia domestication, juvenile fish screening, SNP molecular marker assisted breeding and the like, and finally the hypoxia-resistant grouper variety is obtained. By means of the method, the grouper variety high in hypoxia resistance can be cultivated, the cultivation cost is reduced, and sustainable development of the grouper cultivation industry is promoted.

The invention provides a method for constructing an organ regeneration genetic compensation effect, and relates to the technical field of biology. Comprising the following steps: S1, designing sgRNA; s2, carrying out in-vitro transcription and purification to obtain a high-purity sgRNA solution; s3, preparing fertilized eggs, preparing sgRNA mixed injection, and performing embryo culture after micro-injection operation to obtain F0-generation animal larvae; s4, performing gene knockout efficiency detection on the F0-generation animal larvae, screening out the F0-generation animal larvae with high knockout efficiency, and breeding and mating the F0-generation animal larvae to obtain F1-generation animals; and S5, verifying and screening the F1-generation animals to obtain homozygous knockout individuals, carrying out amputation treatment on the homozygous knockout individuals, and verifying the genetic compensation effect of organ regeneration. The YAP knockout animal is constructed through a gene editing technology, the effect and mechanism of the YAP knockout animal in limb regeneration are researched, whether YAP deletion affects the regeneration capacity through a genetic compensation effect or not can be revealed, and then a theoretical basis and an experimental basis are provided for future regenerative medicine application.

The invention belongs to the technical field of aquaculture, and particularly relates to a greenhouse culture method for soft-shelled turtles, which comprises the following steps: step S1: carrying out steady-state water culture on culture water; and S2, setting the breeding temperature and humidity, and carrying out gradient fry throwing breeding. According to the method, the number of vibrios in the culture water body can be effectively reduced by performing steady-state culture on the culture water body, and then the mortality rate of the young turtles can be effectively reduced by performing gradient-temperature young turtle throwing culture on the turtles.

The present application relates to the technical field of fish breeding, particularly to a breeding and screening device for juvenile prochilodus, comprising: supporting legs, a water tank, a supporting plate, hinges, cover plates, handles, a water outlet pipe, a driving assembly and a screening assembly; the water tank is fixedly installed on the supporting legs, the supporting plate is fixedly installed on one side of the water tank, the cover plates are hingedly connected to the top of the water tank through the hinges, the handles are fixedly installed on the cover plates, the water outlet pipe is fixedly installed on the side of the water tank away from the supporting plate, the driving assembly is fixedly installed on the water tank, and the screening assembly is movably installed in the water tank; the present application can prevent the juvenile prochilodus from having stress reaction during breeding and screening, and can avoid the injury of the juvenile prochilodus without transferring the juvenile prochilodus, thereby greatly improving the screening efficiency of the juvenile prochilodus.

The present application belongs to the technical field of aquaculture, and relates to a method for marking and thickening juvenile crayfish in a rice seedling greenhouse. The method makes full use of the idle period and facility basis of the rice seedling greenhouse, and successfully develops an efficient, safe and environmentally-friendly crayfish juvenile marking and thickening method through a series of innovative modifications and fine management measures. The method has clear parameters and strong operability, and effectively solves the defects of the traditional marking and thickening method through idle utilization, precise environmental control and high-density green marking and thickening. The method solves the problem of crayfish fry supply in rice-crayfish co-culture, and has significant economic, ecological and social benefits.

The invention discloses an artificial maturity promoting and fry breeding method for Peltella corii, which comprises the steps of cooling temporary rearing, maturity promoting, mating, spawning, hatching, high-density larva breeding, metamorphosis and the like, male snails and female snails are separately bred during maturity promoting, and a breeding scheme is optimized. According to the technical scheme, batch gonad maturation of parent snails according to plans is achieved, and the maturity is good; high-density breeding technologies such as fertilized egg hatching and larva breeding are overcome, a stable and efficient fry production process is established, a large number of high-quality, healthy and regular-specification young snails are provided for the breeding industry, and the provenance basis of the industry is fundamentally guaranteed.

This utility model relates to the field of juvenile acclimatization pond technology, specifically a juvenile acclimatization pond for mandarin fish based on a recirculating aquaculture system. The pond includes a circular body with a fish inlet fixedly connected to the top of its side wall. This fish inlet is connected to the opening pond via a pipe. The advantages of this utility model are: the circular pond structure combined with a central drain outlet at the bottom allows for rapid and directional discharge of pollutants such as uneaten feed and feces, effectively reducing the entry of large particulate pollutants into the recirculating water treatment system and lowering energy consumption. The unique fish inlet design allows mandarin fish juveniles to be automatically transferred from the opening pond to the acclimatization pond via water flow guidance, avoiding mechanical damage and stress caused by manual harvesting and significantly reducing juvenile loss. The annular spray jet design simulates a natural feeding environment through regular water flow stimulation, successfully establishing a conditioned reflex feeding mechanism in the mandarin fish juveniles, increasing the acclimatization success rate to over 85%.

The invention discloses a counting device for large-size fries of scylla paramamosain and a using method of the counting device, and relates to the technical field of aquaculture equipment. The counting equipment adopts a modular design and comprises a conveying system, a counting system, a juvenile crab throwing box and a juvenile crab box, a tail baffle of the juvenile crab throwing box can move back and forth according to the number of juvenile crabs; a driving motor of the conveying system is arranged at one end far away from the juvenile crab throwing box to prevent water dripped and splashed from the juvenile crab device from damaging the driving motor, the conveying system is embedded with a double-leaf door of the juvenile crab throwing box, and juvenile crabs in the juvenile crab throwing box are conveyed one by one through a conveying belt, pass through the counting system and enter the juvenile crab box after counting; counting equipment adopts an infrared digital display system and is fixed on a supporting plate on one side, close to a driving motor, of the conveying system, the juvenile crabs on a conveying belt are counted after passing through a scanning recognition area, a height limiting baffle with adjustable height is arranged at a double-leaf door, the juvenile crabs can pass through the counting system one by one, and the counting accuracy is improved.

A method for regulating and controlling freshwater pearl mussels to breed hook larvae all year round belongs to the technical field of aquaculture, and comprises the following steps: selecting sexually mature freshwater pearl mussels, spreading the freshwater pearl mussels in a culture container according to the ratio of female to male being (8-12): 1, keeping the water depth to be 8-12 cm, and keeping the water temperature in the culture container to be 13-18 DEG C; the freshwater pearl mussels are fed with powder formed by mixing hyriopsis cumingii powder and cetyl freeze-dried powder once every 3-5 days, the feeding amount accounts for 6%-10% of the weight of the freshwater pearl mussels, the mass ratio of the hyriopsis cumingii powder to the cetyl freeze-dried powder is (5000-10000): 1, the seasonal limitation of breeding the adulterated larvae by the freshwater pearl mussels is broken through by regulating and controlling the water temperature and strengthening nutrition, and the breeding efficiency of the adulterated larvae is improved. According to the method, the freshwater pearl mussels can continuously breed medium larvae all the year round, the clam larvae can be supplied all the year round, a low-temperature drying sterilization method is adopted, germs can be killed, nutrient substances can be reserved to the maximum extent, and absorption and utilization of the freshwater pearl mussels are facilitated; finally, cyclic utilization is achieved, and waste is turned into wealth.

This invention relates to the field of razor clam aquaculture technology and discloses an air flotation sorting device for juvenile razor clam shells. The device includes a sorting box, which is a rectangular box structure with an open top. Side limiting plates are fixedly installed on the inner walls of the left and right sides of the sorting box. A layered screening mechanism is movably installed inside the sorting box corresponding to the inner side of the side limiting plates. The highest point of the side limiting plates is flush with the highest point of the layered screening mechanism after installation. In this invention, the sorting box stores water, and the entire sorting process for juvenile razor clam shells is completed in an aquatic environment, eliminating the problem of dehydration damage. This design aligns with the aquatic survival characteristics of juvenile razor clam shells, significantly improving the survival rate of sorted juvenile razor clam shells. It solves the problems of traditional sorting methods that result in detachment from the water and low survival rates. The device uses microporous ceramic aeration plates to generate fine and uniform microbubbles, which gently agitate the water, creating a gentle flow without hard impacts. This is suitable for thin-shelled juvenile razor clam shells, reducing the breakage rate of juvenile razor clam shells from the source.

This invention provides a method for the artificial breeding of Litopenaeus vannamei, including steps such as scientifically selecting broodstock, optimizing the breeding environment, controlling the breeding process, fertilization, hatching of fertilized eggs, and intensive rearing. During the breeding process, specific photoperiods and staged feeding strategies are employed, with different ratios of formulated feed and nutritional preparations to meet the nutritional needs of the broodstock. After initial rearing, the hatched juvenile shrimp are graded and selected, followed by intensive rearing. During the intensive rearing stage, water quality parameters are adjusted, and necessary trace elements, vitamins, and specific feeds are administered to promote the healthy growth of the juvenile shrimp. This invention, through meticulous management, significantly improves the breeding success rate and larval survival rate of Litopenaeus vannamei, providing an effective breeding strategy for aquaculture.

This invention provides a feed additive for preventing prolapse of juvenile Toad (Bufo gargarizans) in artificial breeding and its preparation method. This invention also provides a wet pellet feed for preventing prolapse of juvenile Toad (Bufo gargarizans) in artificial breeding and its preparation method. This invention further provides the use of the above-mentioned feed additive and / or wet pellet feed in preventing prolapse of juvenile Toad (Bufo gargarizans). This invention also provides a method for preventing prolapse of juvenile Toad (Bufo gargarizans). The method for preventing prolapse of juvenile Toad (Bufo gargarizans) in artificial breeding provided by this invention improves the stress resistance, immunity, and antioxidant capacity of juvenile Toads, thereby improving the overall health of juvenile Toads in artificial breeding and effectively preventing prolapse.

The invention discloses a method, a system and a device for identifying the age of a green-head diving duck based on multi-feature fusion. The method comprises the following steps: shooting a high-definition image of a target individual; obtaining one or more of feather state information of an ear feather region, a wing region, a hypochondrium region, a shoulder and back region, a tail region, a head and neck region, a chest and abdomen region, eye iris and beak color change information and chest and tail distance and beak length data information of the target individual in the high-definition image, and performing quantitative processing to obtain feature parameters corresponding to each feature; performing multi-dimensional fusion analysis on the characteristic parameters through an integrated machine learning model to realize accurate matching with corresponding week age / month age data in a feather moulting standard time sequence database of the green-head diving ducklings / young birds; and outputting a week age / month age identification result of the target individual. According to the method, a moulting standard time sequence database covering a young bird stage of the green-head diving ducks for the first time is constructed, high-precision and high-efficiency non-injury age identification is realized through combination of the database and a machine learning model, and the dependence on professionals is reduced.

The present invention discloses a method for accurately observing the development process of kelp juveniles in seedling production, comprising the following steps: taking kelp juvenile spore liquid in seedling production, diluting and shaking it with sterilized seawater, and injecting it into the counting chamber of a hemocytometer covered with a cover glass within 5 minutes; after the spores in the counting chamber develop into embryospores, observing the embryospores under a microscope, and using the grids in the large squares of the counting chamber to locate and number the embryospores; removing the cover glass, suspending the hemocytometer in the pool water of kelp juveniles from the same batch as the embryospores on the hemocytometer, observing the growth and development status and development stage of the kelp juveniles marked on the hemocytometer every day, and conducting production management accordingly. The present invention can continuously and accurately track and observe the development and growth of multiple kelp embryospores, and accurately manage the kelp juveniles in the seedling pond accordingly.

The present invention discloses a molecular marker linked to the kiwifruit juvenile QTL and its application, and relates to the fields of molecular biology and genetic breeding technology. The nucleotide sequence of the molecular marker is shown in SEQ ID NO.1; there is a SNP site at 117bp of the molecular marker, which is A or C. The present invention locates the QTL linked to the kiwifruit juvenile stage in kiwifruit, and provides a molecular marker tightly linked to the kiwifruit juvenile QTL. In conventional breeding methods, the growth traits of kiwifruit trees are difficult to judge at the seedling stage, and the accuracy and breeding efficiency are low. By detecting the above-mentioned molecular marker linked to the kiwifruit juvenile QTL, the juvenile traits of kiwifruit plants can be predicted, and then early screening can be carried out, which not only saves production costs but also greatly improves selection efficiency.

The invention provides a breeding method and application of ammonia-nitrogen-resistant river crabs, and belongs to the technical field of river crab breeding. The breeding method provided by the invention comprises the following steps: S1, establishing a breeding base population, and performing ammonia nitrogen resistance evaluation; s2, after the larval crabs of the basic group are subjected to toxic substance counteracting breeding, the robust larval crabs are selected for adult crab breeding; s3, after adult crabs are harvested, robust adult crabs are selected as parent crabs, juvenile crabs are obtained after mating of the parent crabs, and after the juvenile crabs are bred into fifth-stage juvenile crabs, toxic substance counteracting breeding is conducted; s4, after the challenge culture in the step S3, selecting robust juvenile crabs for juvenile crab culture; s5, after the juvenile crabs are harvested, the steps S2 to S4 are repeated, and when the survival rate is larger than or equal to 90% after the juvenile crabs are subjected to toxic substance counteracting breeding, the ammonia-nitrogen-resistant river crabs are successfully bred. The method is simple and easy to implement, the river crabs with ammonia nitrogen resistance can be bred, and development and popularization of crab culture in the rice field are facilitated.

The application relates to a Chinese soft-shelled turtle egg hatching method and relates to the technical field of aquaculture. The hatching method comprises the following steps: wrapping collected turtle eggs with yellow sand and storing the turtle eggs; temporarily storing the stored turtle eggs and removing unfertilized eggs after development; wrapping the fertilized eggs with a hatching medium, wherein the hatching medium comprises the following raw materials in parts by weight: 5-10 parts of yellow sand, 2-5 parts of vermiculite and 1-3 parts of organic modified montmorillonite; arranging the fertilized eggs into a hatching layer; and hatching the hatching layer in a hatching environment with a temperature of 28-32 DEG C and a humidity of 60-80%, to obtain juvenile turtles. The application uses the adsorption of organic modified montmorillonite to preserve the moisture in the yellow sand. The organic modified montmorillonite has good air permeability, and even if the moisture is preserved, there will be no odor or mildew, so that the oxygen required for the hatching of the fertilized eggs can be ensured, the fertilized eggs can develop healthily, the physical quality of the hatched juvenile turtles is better, and the juvenile turtles are more likely to survive when released.

The utility model relates to the technical field of juvenile crab fishing, and discloses an eriocheir sinensis breeding juvenile sampling and fishing device which comprises a fishing barrel used for collecting samples, the right side of the top of the fishing barrel is fixedly connected with a cover plate, the front end and the rear end of the left side of the cover plate are each provided with an opening, and the inner side of the cover plate is rotationally connected with a rotating cover. A shifting block is fixedly connected to the upper side of the rotating cover, the outer wall of the shifting block is tightly matched with the inner wall of the opening, a U-shaped plate is rotationally connected to the outer portion of the upper end of the fishing barrel through an adjusting assembly, and a telescopic handle is installed at the right end of the U-shaped plate through a connecting structure. According to the crab fishing device, the U-shaped plate rotates outside the fishing barrel, so that the angle between the U-shaped plate and the fishing barrel is adjusted, the angle of the fishing barrel is convenient to adjust, juvenile crabs are convenient to fish, the inner rod stretches out and draws back in the rod sleeve, the angle of the handle is adjusted, and fishing is convenient.

The invention discloses a blue crab larva development model based on environmental factor regulation and control, and the model comprises an environmental factor obtaining module which is used for obtaining water environment parameters of blue crab culture in any culture stage; the environmental factor acquisition module can also acquire water environment characteristics according to the change of the water environment parameters in time and the relationship between the water environment parameters and a water environment threshold value; the environment factor evaluation module takes the water environment features as feature vectors and inputs the feature vectors into an environment factor classification model to obtain an evaluation result of the water environment for blue crab culture; and the blue crab growth visual detection module is used for photographing the blue crab individuals in the water environment and estimating the growth of the blue crab individuals. Whether the water environment is suitable for growth of the blue crabs or not can be known through analysis of the water environment and analysis of the individual growth degree of the blue crabs, and the water environment is correspondingly adjusted according to the evaluation result of the water environment, so that the water environment is more beneficial to growth of the blue crabs in the next breeding stage or the next breeding period, and a blue crab farmer is assisted to make a production decision.

The sea horse larva floating type fishing cage comprises a bottom shell and a push rod, a mounting mechanism and a connecting mechanism are arranged on the bottom shell, a motor is started, the motor drives a rotating shaft and a rolling shell to roll a connecting rope, then the connecting rope drives a floating plate, a limiting shell and a fishing shell to move upwards, and the floating plate is driven by the push rod to move upwards. The motor is started forwards and backwards to drive the fishing shell to adjust the height, the fishing shell is adjusted to be placed in a proper position in a water pool according to needs, then the sea horse larvae are fished and collected through the connecting mechanism, the collected sea horse larvae can be separated from the water surface according to the operation in the reverse direction after fishing is completed, and then the sea horse larvae are taken out through the connecting mechanism. Through the operation, the position of the fishing shell can be quickly, automatically and accurately adjusted to fish the sea horse larvae, the operation steps of workers are reduced, the time and energy of the workers are saved, and the labor intensity is reduced.

This invention relates to a three-stage, north-south relay culture method for burrowing shellfish, belonging to the field of aquaculture. The method involves large-scale indoor seedling cultivation along the coast of Fujian and Zhejiang provinces in southern China from September to November. The juveniles are then transported to Shandong province in March of the following year, where they undergo intermediate cultivation in seawater ponds from March to May. After 2-3 months of cultivation, the juveniles reach a size of 5,000-10,000 clams per kilogram. They are then transported to the coastal areas of Liaoning and Hebei provinces for intertidal culture. This invention breaks with the traditional culture model for Manila clams by selecting the intermediate cultivation area in the Shandong coastal region and using raft-type suspended ponds to improve cultivation efficiency and survival rate. After intermediate cultivation, the Manila clams are transported to northern coastal areas such as Dalian, Liaoning province for intertidal culture, resulting in a high survival rate. The entire culture process shortens the cultivation cycle of Manila clams in northern China from 2-3 years to 10-12 months.

The invention belongs to the technical field of aquaculture, and provides a mandarin fish fry feed domestication and adult fish antibiotic-free culture management method, which comprises the following steps: setting a domestication fish pond and an adult fish pond, and cleaning and disinfecting; regulating and controlling the water quality of the fish pond; setting up a seedling domestication net cage; implementing a five-stage progressive feeding domestication process on the mandarin fish fries in the fry domestication net cage; transferring the domesticated seedlings to a fish pond; performing feed feeding management on the mandarin fish fries; a collaborative purification technology is adopted to regulate and control the water quality of the fish pond; a microscope is combined with a molecular detection technology to prevent and control parasites; a traditional Chinese medicine maintenance mode is adopted, and a traditional Chinese medicine immunopotentiator is added into the feed; checking the condition of the mandarin fish regularly; according to physiological characteristics and feeding habits of mandarin fish in different growth stages, food feeding is gradually changed, domestication from live bait to artificial bait is successfully achieved, the success rate of domestication is increased, the breeding cost is reduced, and dependence on fresh and live bait fish is reduced.

The invention discloses a saline-alkaline-tolerant breeding domestication and long-distance transportation method for larvae of kiss bass. The method comprises the following steps: (1) hatching fertilized eggs; (2) breeding in a hatching pond; (3) culturing in an indoor culture pond; (4) gradually desalting and domesticating; (5) carrying out a long-distance transportation simulation test: (5.1) blending a water body; (5.2) starvation and cooling pretreatment before transportation; (5.3) optimizing the bagging density; (5.4) low-temperature oxygenation sealing and transportation; (5.5) buffering the temperature and water quality after landing into the pool; according to the method, the in-transit stress and death risk can be effectively reduced, the long-distance transportation survival rate and field adaptability are improved, technical support is provided for large-scale cultivation and cross-regional supply of the kiss bass in the inland saline-alkali area, and the method has good application prospects and economic value.

The application discloses a breeding device for prochilodus jaru, and relates to the field of fry breeding.The breeding device comprises a sliding rail and a driving unit, and the driving unit moves along the surface of the sliding rail.The breeding device further comprises a rotating wheel which is installed at the bottom of the driving unit, and a transmission rod is fixedly installed at the middle part of the rotating wheel.A transmission inner shaft is threadedly connected with the rotating wheel, and a connecting plate is threadedly connected with the transmission rod at the middle part of one side of the connecting plate.A horizontal moving plate is fixedly installed at the bottom of the connecting plate.Box two drives the horizontal moving plate on the box two to rotate, the transmission inner shaft rotates to engage the rotating wheel to drive the transmission rod to rotate, and the connecting plate which is threadedly connected with the transmission rod drives the horizontal moving plate to translate along the axial direction of the transmission rod.The breeding device for prochilodus jaru blocks light at the top of the box two, so that the prochilodus jaru is not stimulated by light when cleaning fish manure, and the rotating pipe translates along the edge of the bottom of the box two to the middle part of the bottom of the box two, so that all positions at the bottom of the breeding tank can be cleaned, and the cleaning efficiency and the cleaning neatness of the fish manure at the bottom of the breeding tank are improved.